如何从certbot命令获取响应内容？

Question

我正在使用python paramiko编写用于自动生成SSL证书的工具

我的步骤：

1。使用paramiko自动登录AWS Linux服务器（EC2），此步骤成功

2.Exec certbot命令，我无法获得响应内容，但是我可以读取 如果我在aws终端上执行命令，则响应消息

PS：其他命令可以获取内容，例如：“ ls -al”，“ ls”，“ cd”，“ mkdir”，“ touch” ..............

这是我的代码结果的屏幕截图：

所以我不知道为什么我无法获得响应内容，哪个链接有问题吗？

谢谢大家！

import argparse
import paramiko
import time


class GenerateSsl:
    def __init__(self, host, key):
        self.generate_ssl_host = host
        self.sandbox_host_key = key

    def connect_to_sandbox(self):
        try:
            folder_name = self.generate_ssl_host.replace('.', '')
            k = paramiko.RSAKey.from_private_key_file(self.sandbox_host_key)
            c = paramiko.SSHClient()
            c.set_missing_host_key_policy(paramiko.AutoAddPolicy())
            print('[-] connecting')
            c.connect(hostname="x.x.x.x", username="ec2-user", pkey=k)
            print('[+] connected')

            commands = [
                # "ls -al",
                # "ls /var/www/%s" % (folder_name),
                # "sudo touch /var/www/%s/index.html" % (folder_name),
                "sudo ./certbot-auto certonly --webroot  -w /var/www/%s  -d %s" % (folder_name, self.generate_ssl_host)
            ]

            for index, command in enumerate(commands):
                print(index)
                print('[+] ' + "Executing %s" % (format(command)))
                stdin, stdout, stderr = c.exec_command(command)

                print(stdout.read())
                print(stdout.readline())
                print(stdout.readlines())
                # if index == 0:
                #     print('2222222222')
                #     response = stdout.readlines()
                #     print(response)
                # else:
                #     response = stdout.read().decode()
                #     print(response)


                # if index == 2 is True:
                #     print('step 2')
                #     print(response)
                # else:
                #     print('0000000')

            # stdin, stdout, stderr = c.exec_command(command)
            # response = stdout.read().decode()
            # if response == '':
            #     command = "sudo mkdir /var/www/%s" % (folder_name)
            #     stdin, stdout, stderr = c.exec_command(command)
            #     response = stdout.read().decode()
            #     if response == '':
            #         print('[+] ' + "Executing %s successfully" % (format(command)))

            # commands = ["sudo ./certbot-auto certonly --webroot  -w /var/www/www2  -d %s" % (self.generate_ssl_host)]
            # for command in commands:
            #     print('[+] ' + "Executing %s" % (format(command)))
            #     stdin, stdout, stderr = c.exec_command(command)
            #     print(stdout.read().decode())
            c.close()
        except Exception:
            print(Exception)
        finally:
            c.close()


def main():
    parser = argparse.ArgumentParser(description='Automatic Generation of Domain Name SSL Certificate.')
    parser.add_argument('-host', help='Domain name that need to generate SSL certificates')
    parser.add_argument('-key', help='Sandbox server aws key')
    args = parser.parse_args()
    instance = GenerateSsl(args.host, args.key)
    instance.connect_to_sandbox()


if __name__ == '__main__':
    main()